package org.jeecg.modules.contract.controller;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.jeecg.common.api.vo.Result;
import org.jeecg.common.aspect.annotation.AutoLog;
import org.jeecg.common.system.query.QueryGenerator;
import org.jeecg.common.util.oConvertUtils;
import org.jeecg.modules.contract.entity.ContractFile;
import org.jeecg.modules.contract.service.IContractFileService;
import org.jeecgframework.poi.excel.ExcelImportUtil;
import org.jeecgframework.poi.excel.def.NormalExcelConstants;
import org.jeecgframework.poi.excel.entity.ExportParams;
import org.jeecgframework.poi.excel.entity.ImportParams;
import org.jeecgframework.poi.excel.view.JeecgEntityExcelView;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

/**
 * @Description: 文件上传
 * @Author: jeecg-boot
 * @Date: 2019-07-29
 * @Version: V1.0
 */
@Slf4j
@Api(tags="文件上传")
@Controller
@RequestMapping("/contract/contractFile")
public class ContractFileController {
    @Autowired
    private IContractFileService contractFileService;
    @Value("${jeecg.path.upload}")
    private String uploadPath;

    /**
     * 添加
     *
     * @param contractFile
     * @return
     */
    @AutoLog(value="文件上传-添加")
    @ApiOperation(value="文件上传-添加", notes="文件上传-添加")
    @PostMapping(value="/add")
    @ResponseBody
    public Result <ContractFile> add(@RequestBody ContractFile contractFile) {
        Result <ContractFile> result=new Result <ContractFile>();
        try {
            contractFileService.save(contractFile);
            result.success("添加成功！");
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            result.error500("操作失败");
        }
        return result;
    }

    /**
     * 通过id删除
     *
     * @param id
     * @return
     */
    @AutoLog(value="文件上传-通过id删除")
    @ApiOperation(value="文件上传-通过id删除", notes="文件上传-通过id删除")
    @DeleteMapping(value="/delete")
    @ResponseBody
    public Result <?> delete(@RequestParam(name="id", required=true) String id) {
        try {
            contractFileService.removeById(id);
        } catch (Exception e) {
            log.error("删除失败", e.getMessage());
            return Result.error("删除失败!");
        }
        return Result.ok("删除成功!");
    }

    /**
     * 批量删除
     *
     * @param ids
     * @return
     */
    @AutoLog(value="文件上传-批量删除")
    @ApiOperation(value="文件上传-批量删除", notes="文件上传-批量删除")
    @DeleteMapping(value="/deleteBatch")
    @ResponseBody
    public Result <ContractFile> deleteBatch(@RequestParam(name="ids", required=true) String ids) {
        Result <ContractFile> result=new Result <ContractFile>();
        if (ids == null || "".equals(ids.trim())) {
            result.error500("参数不识别！");
        } else {
            this.contractFileService.removeByIds(Arrays.asList(ids.split(",")));
            result.success("删除成功!");
        }
        return result;
    }

    /**
     * 返回流預覽pdf
     *
     * @return
     */
    @RequestMapping("/downPDF")
    public ResponseEntity <byte[]> downPDF(@RequestParam("id") String id) throws IOException {
        ContractFile byId=contractFileService.getById(id);
        File file=new File(byId.getFilePath());
        HttpHeaders httpHeaders=new HttpHeaders();

        httpHeaders.setContentType(MediaType.APPLICATION_PDF);
        return new ResponseEntity <>(FileUtils.readFileToByteArray(file), httpHeaders, HttpStatus.CREATED);
    }

    /**
     * 编辑
     *
     * @param contractFile
     * @return
     */
    @AutoLog(value="文件上传-编辑")
    @ApiOperation(value="文件上传-编辑", notes="文件上传-编辑")
    @PutMapping(value="/edit")
    @ResponseBody
    public Result <ContractFile> edit(@RequestBody ContractFile contractFile) {
        Result <ContractFile> result=new Result <ContractFile>();
        ContractFile contractFileEntity=contractFileService.getById(contractFile.getPkFile());
        if (contractFileEntity == null) {
            result.error500("未找到对应实体");
        } else {
            boolean ok=contractFileService.updateById(contractFile);
            //TODO 返回false说明什么？
            if (ok) {
                result.success("修改成功!");
            }
        }

        return result;
    }

    /**
     * 导出Word文档
     *
     * @return
     */
    @RequestMapping("/{id}")
    public ResponseEntity <byte[]> exportWord(@PathVariable("id") String id) throws IOException {
        ContractFile byId=contractFileService.getById(id);
        File file=new File(byId.getFilePath());
        HttpHeaders httpHeaders=new HttpHeaders();

        httpHeaders.setContentType(MediaType.APPLICATION_OCTET_STREAM);
        httpHeaders.setContentDispositionFormData("attachment", URLEncoder.encode(byId.getFileName(), "utf-8"));


        return new ResponseEntity <>(FileUtils.readFileToByteArray(file), httpHeaders, HttpStatus.CREATED);
    }

    /**
     * 导出excel
     *
     * @param request
     * @param response
     */
    @RequestMapping(value="/exportXls")
    @ResponseBody
    public ModelAndView exportXls(HttpServletRequest request, HttpServletResponse response) {
        // Step.1 组装查询条件
        QueryWrapper <ContractFile> queryWrapper=null;
        try {
            String paramsStr=request.getParameter("paramsStr");
            if (oConvertUtils.isNotEmpty(paramsStr)) {
                String deString=URLDecoder.decode(paramsStr, "UTF-8");
                ContractFile contractFile=JSON.parseObject(deString, ContractFile.class);
                queryWrapper=QueryGenerator.initQueryWrapper(contractFile, request.getParameterMap());
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        //Step.2 AutoPoi 导出Excel
        ModelAndView mv=new ModelAndView(new JeecgEntityExcelView());
        List <ContractFile> pageList=contractFileService.list(queryWrapper);
        //导出文件名称
        mv.addObject(NormalExcelConstants.FILE_NAME, "文件上传列表");
        mv.addObject(NormalExcelConstants.CLASS, ContractFile.class);
        mv.addObject(NormalExcelConstants.PARAMS, new ExportParams("文件上传列表数据", "导出人:Jeecg", "导出信息"));
        mv.addObject(NormalExcelConstants.DATA_LIST, pageList);
        return mv;
    }

    /**
     * 返回PDF流
     *
     * @param id
     * @return
     * @throws IOException
     */
    @RequestMapping("/getPDF/{id}")
    @AutoLog(value="文件上传-pdf")
    @ApiOperation(value="文件上传-pdf", notes="文件上传-pdf")
    public ModelAndView getPDF(@PathVariable("id") String id, HttpServletRequest request, @RequestParam("token") String token) throws IOException {
        ContractFile byId=contractFileService.getById(id);
        id=contractFileService.savePDF(byId, request);
        ModelAndView view=new ModelAndView();
        view.setViewName("redirect:/sys/common/pdf/pdfPreviewIframe?id=" + id + "&token=" + token + "");
        return view;
    }

    /**
     * 通过excel导入数据
     *
     * @param request
     * @param response
     * @return
     */
    @RequestMapping(value="/importExcel", method=RequestMethod.POST)
    @ResponseBody
    public Result <?> importExcel(HttpServletRequest request, HttpServletResponse response) {
        MultipartHttpServletRequest multipartRequest=(MultipartHttpServletRequest) request;
        Map <String, MultipartFile> fileMap=multipartRequest.getFileMap();
        for (Map.Entry <String, MultipartFile> entity : fileMap.entrySet()) {
            MultipartFile file=entity.getValue();// 获取上传文件对象
            ImportParams params=new ImportParams();
            params.setTitleRows(2);
            params.setHeadRows(1);
            params.setNeedSave(true);
            try {
                List <ContractFile> listContractFiles=ExcelImportUtil.importExcel(file.getInputStream(), ContractFile.class, params);
                contractFileService.saveBatch(listContractFiles);
                return Result.ok("文件导入成功！数据行数:" + listContractFiles.size());
            } catch (Exception e) {
                log.error(e.getMessage(), e);
                return Result.error("文件导入失败:" + e.getMessage());
            } finally {
                try {
                    file.getInputStream().close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return Result.ok("文件导入失败！");
    }

    /**
     * 通过id查询
     *
     * @param id
     * @return
     */
    @AutoLog(value="文件上传-通过id查询")
    @ApiOperation(value="文件上传-通过id查询", notes="文件上传-通过id查询")
    @GetMapping(value="/queryById")
    @ResponseBody
    public Result <ContractFile> queryById(@RequestParam(name="id", required=true) String id) {
        Result <ContractFile> result=new Result <ContractFile>();
        ContractFile contractFile=contractFileService.getById(id);
        if (contractFile == null) {
            result.error500("未找到对应实体");
        } else {
            result.setResult(contractFile);
            result.setSuccess(true);
        }
        return result;
    }

    /**
     * 分页列表查询
     *
     * @param contractFile
     * @param pageNo
     * @param pageSize
     * @param req
     * @return
     */
    @AutoLog(value="文件上传-分页列表查询")
    @ApiOperation(value="文件上传-分页列表查询", notes="文件上传-分页列表查询")
    @GetMapping(value="/list")
    @ResponseBody
    public Result <IPage <ContractFile>> queryPageList(ContractFile contractFile, @RequestParam(name="pageNo", defaultValue="1") Integer pageNo, @RequestParam(name="pageSize", defaultValue="10") Integer pageSize, HttpServletRequest req) {
        Result <IPage <ContractFile>> result=new Result <IPage <ContractFile>>();
        QueryWrapper <ContractFile> queryWrapper=QueryGenerator.initQueryWrapper(contractFile, req.getParameterMap());
        Page <ContractFile> page=new Page <ContractFile>(pageNo, pageSize);
        IPage <ContractFile> pageList=contractFileService.page(page, queryWrapper);
        result.setSuccess(true);
        result.setResult(pageList);
        return result;
    }


}
